updated downloaded cmake package since previous one seemed not to build on solaris

updated ctetgen.py to use GNUMake and use PETSc makefiles for compiling (ad hoc didn't always work)
remove clique.py since will be distributed with elemental

move precision,scalartype and integer size over to config.package.Package
note this is an incomplete update since consistency checks must be turned off

converted several packages to not use PETSc.package.NewPackage since they do not need it

switch MPE.py to use the pure GNUPackage

hwloc.py now simply uses the GNUPackage for installs

bug fix in package.py
html.py should not use default GNUPackage compilers since they may be mpi based
netcdf.py requires hdf5.py
updated prizes info

converted Numpy to config.package.Package

switched yaml.py to use package.GNUPackage

cmake.py now uses GNUPackage

update lgrind.py to use just config.package.Package and install auxillary files in correct location

switched make.py c2html.py and sowing.py to use GNUPackage
also added support to GNUPackage to install packages in confDir ie. PETSC_DIR/PETSC_ARCH when private to PETSc builds

moved isBGL() from PETSc libraryOptions to BuildSystem libraries
because it is not in any particular way PETSc specific unline precision, scalartype etc

moved non-PETSc specific package feature to base package

configure: add git branchname to petscconf.h and configure.log

Configure: No longer use __init__.py to store the list of packages, read them from the filesystem

ctetgen.py depends on mpi
MPICH is now more careful about exactly what GNU configure options it rejects to prevent possible options

removed --download-mpich to its own MPICH.py file

--download-mpi4py and --download-petsc4py now work correctly for prefix installs and not with and without sudo needed

split mpi4py generation into build phase run when PETSc is built and install phase run when PETSc is installed (or run when PETSc is built if --prefix is not set)

updated externalpackages to print message about SUDO password if needed by prefix only once
updated many packages to install under sudo if needed

updated several more external packages to use sudo as needed
removed two outdated external package installers

Updated multiple packages to support sudo usage when --prefix is not writable to user

update 9 more packages to use sudo for needed prefix installs
removed four download packages that are no longer relevent

removed --prefix-sudo-password option for security concerns
Note one could set a longish timeout on sudo to prevent repeated requests for the password during configure